A number of steel companies are among a barrage of stocks that are slated to report their quarterly numbers on Apr 25.As per the Zacks Industry classification, the steel industry is grouped under the broader Basic Materials sector. Based on the Earnings Preview as of Apr 21, 15% of the sector participants on the S&P 500 index have reported their quarterly numbers. Earnings for these companies increased by a solid 41.9% from the same period last year on 12.9% higher revenues.

The Basic Materials sector is one of the only three sectors that are projected to witness double-digit earnings growth in the first quarter. Overall earnings for the sector are projected to rise 11% while revenues are expected to increase 2.1%.

Steel market conditions have improved of late, driven by favorable developments on steel trade cases in the recent past and improved prices. The industry also continues to benefit from the sustained healthy demand in the automobile and construction sectors. The steel industry is also expected to be one of the key beneficiaries of Donald Trump's presidency. President Trump's call for $1 trillion of new infrastructure spending is likely to give the steel industry a shot in the arm given the expected increase in steel consumption.

Let’s take a peek at four steel companies that are gearing up to report their first-quarter results on Apr 25.

United States Steel Corporation (X - Free Report), which will report its results after the bell, is expected to come up with a positive earnings surprise as it carries a Zacks Rank #1 (Strong Buy) and an Earnings ESP of +18.75%. You can uncover the best stocks to buy or sell before they’re reported with our Earnings ESP Filter.

U.S. Steel beat the Zacks Consensus Estimate in two of the trailing four quarters, while missed in the other two with an average positive surprise of 630.61%. U.S. Steel is focusing on improving its assets and operating performance and driving innovation that creates differentiated solutions for its customers. The company is also aggressively pursuing actions to improve its cost structure through its “Carnegie Way” program that should lend support to its first-quarter results. (Read more: U.S. Steel Q1 Earnings Preview: Stock Poised to Beat?)

United States Steel Corporation Price and EPS Surprise

United States Steel Corporation Price and EPS Surprise | United States Steel Corporation Quote

Allegheny Technologies Incorporated (ATI - Free Report) will report quarterly results before the bell. The company is expected to come up with a positive earnings surprise as it carries a favorable Zacks Rank #3 (Hold) and an Earnings ESP of +27.27%. You can see the complete list of today’s Zacks #1 Rank stocks here.

The company surpassed the Zacks Consensus Estimate in three of the trailing four quarters while missed on one occasion. In this timeframe, it delivered an average positive surprise of 5.14%. Allegheny remains focused on returning to sustainable profitable growth with an emphasis on strong balance sheet and cash flow generation. Moreover, the company continues to improve its cost structure with its gross cost reduction initiative. It has implemented a number of restructuring actions that are expected to deliver attractive cost savings. (Read more: Allegheny to Post Q1 Earnings: What's in the Cards?)

Allegheny Technologies Incorporated Price and EPS Surprise

Allegheny Technologies Incorporated Price and EPS Surprise | Allegheny Technologies Incorporated Quote

AK Steel Holding Corporation (AKS - Free Report) will report earnings numbers ahead of the bell. The company has an Earnings ESP of -6.67% as the Most Accurate estimate stands at 14 cents while the Zacks Consensus Estimate is pegged at 15 cents. Although the stock carries a Zacks Rank #3, its negative ESP makes surprise prediction difficult.

AK Steel has an impressive surprise history. It beat estimates in each of the trailing four quarters, with an average beat of 166.34%.

AK Steel Holding Corporation Price and EPS Surprise

AK Steel Holding Corporation Price and EPS Surprise | AK Steel Holding Corporation Quote

Ternium S.A. (TX - Free Report) will report its results after the bell. The company has an Earnings ESP of 0.00% as both the Most Accurate estimate and the Zacks Consensus Estimate are pegged at 81 cents. While the company carries a Zacks Rank #1, its 0.00% ESP makes surprise prediction difficult.

Ternium surpassed the Zacks Consensus Estimate in three of the trailing four quarters while missed in one occasion. The company delivered an average positive surprise of 16.43% over this period.

Ternium S.A. Price and EPS Surprise

Ternium S.A. Price and EPS Surprise | Ternium S.A. Quote